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vadvise.h
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vadvise.h
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/* $NetBSD: vadvise.h,v 1.10 2005/12/11 12:25:21 christos Exp $ */
/*-
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)vadvise.h 8.1 (Berkeley) 6/2/93
*/
#ifndef _SYS_VADVISE_H_
#define _SYS_VADVISE_H_
/*
* Parameters to vadvise() to tell system of particular paging
* behaviour:
* VA_NORM Normal strategy
* VA_ANOM Sampling page behaviour is not a win, don't bother
* Suitable during GCs in LISP, or sequential or random
* page referencing.
* VA_SEQL Sequential behaviour expected.
* VA_FLUSH Invalidate all page table entries.
*/
#define VA_NORM 0
#define VA_ANOM 1
#define VA_SEQL 2
#define VA_FLUSH 3
#ifndef _KERNEL
__BEGIN_DECLS
int vadvise(int);
__END_DECLS
#endif
#endif /* !_SYS_VADVISE_H_ */